Photoshop offers many different techniques to remove unwanted background from an image. For a simple background, using the standard magic wand tool to select and remove backgrounds can be more than enough.
For a more complex background, you can use the background eraser tool. This tool gives a color sample in the center of the brush and then you remove the pixels of the same color as "paint". It looks like painting with acids. I'll show you how it works.
Step 1: Open your image
Start by grabbing the image that you want to remove from the background. I will use this image because it has areas that are easily removed to more challenging spots.
Step 2: Select Background Eraser
Select Background Eraser tool from the Photoshop Toolbox. It can be hidden under eraser device. If so, simply click and drag the Eraser tool to reveal it.
Step 3: Tune your tool settings
Select a round, hard brush on the tool options bar at the top of the screen. Depending on the image you are working on, the most suitable brush size will be different. Use the square bracket key ([or]) to scale your brush size faster.
After this, on the Tool Options bar, set the sampling continuously, anywhere between the limit for finding the edges and anywhere between 20-25% tolerance is a good starting point.
Step 4: Start Smothering
Bring the brush into your background and start laughing. You should see a circle of brush size with a small cross in the middle. The circles show the "hotspot" and remove the color that appears anywhere in the brush area. It also allows intelligent color extraction at the edges of any foreground objects to remove the "halo" that might otherwise be visible if the front object is overlaid on any other background.
Note: For example, I've actually used a high tolerance compared to the recommended 20-25% higher due to a wide range of blues for this subject.
When erasing, zoom your work area and try to prevent cross-hairs from overlapping on the foreground side. It's likely that you will need to reduce the size of the brush in some places so that it can be ensured that you will not be able to erase your foreground topic accidentally.
Step 5: Selecting Effective Borders and Sample Settings
I have used a small brush to work around the hair and neck area, nevertheless the background remover has been able to gauge some parts of hair and shirt.
For foreground image areas that share color with background (like this), you may need to adjust the sampling and borders. In this picture, I switched to sampling: Once the option, set my limits to unbalance and set my tolerance to 30%.
Sampling: Once the option gives the color only the sample below the crosshairs at the moment when you click and when you take your brush with it it does not sample again. Disconceive border option allows you to erase all pixels that match the sample color you are wiping out. It allowed me to go in between the stars without removing the hair.
There is a good chance to remove background work that you need to complete your task.
But if not, then read.
Step 6: Quick Mask or Pen Tool
When removing the background in our example, it is mostly straightforward because of a relatively solid background, necessarily the areas of our foreground that are erroneously erased when working near the edges of the foreground.
In our example, the foreground and background are similar in color due to lighting. This will be easiest to fix with Photoshop Pen. I have only a small section I need to touch so I use a pen to create a clean selection and remove the unwanted background.
Here is the final result:
The final word
If you are working with a basic image with sufficient visual contrast between the subject and the background, you can most likely get out using only the background clearing tool.
Complicated snapshots are likely to require a combination of tools, samples, and tolerances, along with occasional manual touches. There will be times when there is no visible difference between foreground and background. We need to do this manually.
And remember that if you save an image without adding a new background, you must save it as a PNG to maintain transparency.
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